import math
multiples=[i for i in range(30) if i%5==0]
print(multiples)
names=['Bob','Tom','alice','Jerry','Wendy','Smith']
new_names=[name.upper() for name in names if len(name)>3]
print(new_names)
listdemo=['Google','Run','Taobao']
newdict={key:len(key) for key in listdemo}
print(newdict)
print(math.pi)